Samantha Berger has written picture books including Crankenstein, A Crankenstein Valentine, and Trick or Treat, Crankenstein; What If..., Rock What You Got, Snail Mail, and Martha Doesn't Say Sorry, which won a Parent's Choice Award Honor. When she isn't writing, she's doing voice-overs, traveling the world, and helping rescue dogs. Samantha splits her time between New York City and California.

Dan Santat is the author and artist of the Caldecott Award–winning The Adventures of Beekle: The Unimaginary Friend and the National Book Award–winning A First Time for Everything, as well as the New York Times bestsellers Are We There Yet? and After the Fall. He has also illustrated many titles, including Drawn Together by Minh Lê, The Alphabet's Alphabet by Chris Harris, and the Crankenstein series by Samantha Berger. Dan lives in Southern California with his wife, two kids, and two dogs. He can be found online at dansantat.tumblr.com.